#!/bin/sh
#
# Copyright 2014 Google Inc. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

: ${XSECURELOCK_LIST_VIDEOS_COMMAND:=find ~/Videos -type f}
: ${XSECURELOCK_IMAGE_DURATION_SECONDS:=1}
: ${XSECURELOCK_VIDEOS_FLAGS:=}

# Run mpv in a loop so we can quickly restart mpv in case it exits (has shown
# the last picture/video).
while true; do
  sh -c "$XSECURELOCK_LIST_VIDEOS_COMMAND" | shuf | head -n 256 |\
  @path_to_mpv@ \
    --no-input-terminal \
    --really-quiet \
    --no-stop-screensaver \
    --wid="${XSCREENSAVER_WINDOW}" \
    --no-audio \
    --image-display-duration="${XSECURELOCK_IMAGE_DURATION_SECONDS}" \
    --shuffle \
    --loop-playlist=inf \
    ${XSECURELOCK_VIDEOS_FLAGS} \
    --playlist=- &
  # Avoid spinning if mpv exits immediately, but don't wait to restart mpv in
  # the common case.
  sleep 1
  wait
done
